Looking for the schematics of Sugden IA-4 Masterclass integrated.

[Alexander]

I would be grateful if someone share the schematics of Sugden IA-4 Masterclass integrated. One of the channels failed. Possibly some of the caps degraded. There's nowhere I can find the schematics for the AMP on the net to check and repair it without the possiblity of sending it to the UK manufacturer for the overhaul.